Title (en)

METHOD OF RECOVERING VOLATILE FOAMING AGENT FROM PREFOAMED BEADS OF POLYOLEFIN RESINS

Publication

EP 0182130 A3 19870902 (EN)

Application

EP 85113378 A 19851022

Priority

JP 22252484 A 19841023

Abstract (en)

[origin: EP0182130A2] The present invention provides a method of recovering volatile foaming agent contained in prefoamed beads of polyolefin resin characterized in that the volatile foaming agent contained in the prefoamed beads is recovered by bringing into contact with heated air prefoamed beads obtained by heating polyolefin resin beads containing the volatile foaming agent. According to the method of the invention it is possible to avoid not only aggravation of the working environments and atmospheric pollution but also risk of explosion etc. and, furthermore, material cost can be saved through reutilization of the recovered volatile foaming agent.

IPC 1-7

C08J 11/02; C08J 9/22

IPC 8 full level

C08J 9/22 (2006.01); C08J 9/16 (2006.01); C08J 11/00 (2006.01); C08J 11/02 (2006.01)

CPC (source: EP KR US)

C08J 9/22 (2013.01 - KR); C08J 11/02 (2013.01 - EP KR US); Y10S 264/09 (2013.01 - EP US)

Citation (search report)

• [X] BE 702807 A 19680219
• [X] GB 1289281 A 19720913
• [XP] US 4531951 A 19850730 - BURT JAMES G [US], et al

Designated contracting state (EPC)

BE CH DE FR GB IT LI NL SE

DOCDB simple family (publication)

EP 0182130 A2 19860528; EP 0182130 A3 19870902; CA 1250088 A 19890214; JP H0513173 B2 19930219; JP S61101539 A 19860520; KR 860003291 A 19860523; KR 930003895 B1 19930515; US 4682989 A 19870728

DOCDB simple family (application)

EP 85113378 A 19851022; CA 493326 A 19851018; JP 22252484 A 19841023; KR 850007767 A 19851022; US 78967285 A 19851021